From e83b6f735ea96e58a799e615291f8c87b516ff90 Mon Sep 17 00:00:00 2001
From: elmotec <1107551+elmotec@users.noreply.github.com>
Date: Tue, 2 Dec 2025 21:46:58 -0500
Subject: [PATCH] Bind /tmp/docker.sock in backup spawned container

Override volumes for the backup runner so the backup process container gets a direct mount of the socket.  Otherwise the verb `status` works but `backup` generates the following error:

```
Traceback (most recent call last):
  File "/restic-compose-backup/.venv/lib/python3.14/site-packages/urllib3/connectionpool.py", line 787, in urlopen
    response = self._make_request(
        conn,
    ...<10 lines>...
        **response_kw,
    )
  File "/restic-compose-backup/.venv/lib/python3.14/site-packages/urllib3/connectionpool.py", line 493, in _make_request
    conn.request(
    ~~~~~~~~~~~~^
        method,
        ^^^^^^^
    ...<6 lines>...
        enforce_content_length=enforce_content_length,
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/restic-compose-backup/.venv/lib/python3.14/site-packages/urllib3/connection.py", line 445, in request
    self.endheaders()
    ~~~~~~~~~~~~~~~^^
  File "/root/.local/share/uv/python/cpython-3.14.0-linux-x86_64-musl/lib/python3.14/http/client.py", line 1333, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
    ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/root/.local/share/uv/python/cpython-3.14.0-linux-x86_64-musl/lib/python3.14/http/client.py", line 1093, in _send_output
    self.send(msg)
    ~~~~~~~~~^^^^^
  File "/root/.local/share/uv/python/cpython-3.14.0-linux-x86_64-musl/lib/python3.14/http/client.py", line 1037, in send
    self.connect()
    ~~~~~~~~~~~~^^
  File "/restic-compose-backup/.venv/lib/python3.14/site-packages/docker/transport/unixconn.py", line 26, in connect
    sock.connect(self.unix_socket)
    ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory
```

where self.unix_socket is `/tmp/docker.sock`.
---
 src/restic_compose_backup/backup_runner.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/restic_compose_backup/backup_runner.py b/src/restic_compose_backup/backup_runner.py
index f80d64b..9dfe94e 100644
--- a/src/restic_compose_backup/backup_runner.py
+++ b/src/restic_compose_backup/backup_runner.py
@@ -17,6 +17,7 @@ def run(
     logger.info("Starting backup container")
     client = utils.docker_client()
 
+    volumes["/var/run/docker.sock"] = {"bind": "/tmp/docker.sock", "mode": "ro"};
     container = client.containers.run(
         image,
         command,